<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
        
	</body>
    
    <script>
        
        console.log( "这个屏幕的可用高度是==> "+  window.screen.availHeight);
        console.log("这个屏幕的可用宽度是==> "+window.screen.availWidth);
        console.log("这个屏幕的总高度是==> "+window.screen.height);
        console.log("这个屏幕的总高度是==> "+window.screen.width);
      
    </script>
</html>
